and anderson cooper starts right now, gabrielle giffords, whose life was changed by a gunman, was on capitol hill today, speaking on a subject, preventing another situation like tucson or newtown from happening, keep in mind, we're trying to figure out. and a snow mobile flipping, landed on its rider, there was another incident where they went running into riders, why we'll take a look at some of these extreme sports, we begin in rural alabama, with a little boy's life at stake. a 6-year-old, who needs medication, being held by a suspected killer in a bunker, surrounded by authorities. authorities have not released the suspect's name, but neighbors say he is a 65-year-old man by the name of jimmy lee dikes, who is paranoid, that is how they described him. he had a run-in last year with neighbors. he is in the bunker in the front yard with the 6-year-old child. now the standoff began yesterday when the gunman, allegedly dikes, stepped on the school bus, demanding two boys. when the driver tried to stop him, the gunman fired shots and killed the driver, who is being hailed as a hero to